<?php

/**
 * UserIdentity represents the data needed to identity a user.
 * It contains the authentication method that checks if the provided
 * data can identity the user.
 */
class UserIdentity extends CUserIdentity
{
        
    private  $_id;
    /**
	 * Authenticates a user.
	 * The example implementation makes sure if the username and password
	 * are both 'demo'.
	 * In practical applications, this should be changed to authenticate
	 * against some persistent user identity storage (e.g. database).
	 * @return boolean whether authentication succeeds.
	 */
	public function authenticate()
	{
            
                $record=  Member::model()->findByAttributes(array('username'=>$this->username)); 
                if($record===null) 
                $this->errorCode=self::ERROR_USERNAME_INVALID; 
                else if($record->password!==md5($this->password)) 
                $this->errorCode=self::ERROR_PASSWORD_INVALID; 
                else 
                { 
                $this->_id=$record->id; 
                $this->setState('username', $record->username); 
                $this->errorCode=self::ERROR_NONE; 
                }
                
                return !$this->errorCode; 
            
//		$users=array(
//			// username => password
//			'demo'=>'demo',
//			'admin'=>'admin',
//		);
//		if(!isset($users[$this->username]))
//			$this->errorCode=self::ERROR_USERNAME_INVALID;
//		elseif($users[$this->username]!==$this->password)
//			$this->errorCode=self::ERROR_PASSWORD_INVALID;
//		else
//			$this->errorCode=self::ERROR_NONE;
//		return !$this->errorCode;
	}
        
        public function getId() 
        { 
            return $this->_id; 
        } 
}